EL34 Integrated / Power Stereo Amp


35W per channel, class AB amplifier. Ecf80 driver per channel, 12au7 Buffer board.

SKU: EL84-L4-TRIPLE-CORE-1 Categories: , ,


Our EL34 Amplifier is a 35W class AB stereo amplifier available as either an integrated amplifier with a built in 12au7 preamp section or a pure power amplifier with 2x el34 per channel and a single ECF80 driver per channel – the unit is dead quiet due to the excellent grounding strategy and custom designed pcb which lays out all the exact trace lengths – in these feedback high gain amplfiers the trace lengths are a critical part of the circuitry. The result is such that a DIYer can build the unit and get a perfectly performing unit if they follow the instructions! The unit is available with C core output transformers and our custom designed EI core tx!

The EL34 35W stereo amplifier from ANK Audiokits provides some of the finest EL34 amplification available today. It comes in 4 versions as either integrated or power versions. The custom designed and manufactured EL34 IE-Core output transformers or our impressive double C-Cores are at the heart of the system extending the quality of the entire audio spectrum to extraordinary levels. We have packaged the kit options at a very reasonable price to allow users to experience the wonderful aspects of the EL34 tube.
The EL34 IE-Core has been carefully designed to leverage the best possible sound using more traditional transformers. As you can see in the photo transformers, and this amplifier has serious mains and choke performance.


The EL34 stereo amplifier is available as either:

  • An integrated stereo amplifier with the additional 12au7 buffer board, volume pot and selector switch.
  • The pure stereo power amplifier version which is just the main EL34 Board and driver ecf80, with no pots or selector switch.

The Pre-amplifier Section

To provide either an integrated or power amplifier option we designed a 12AU7 pre-amplifier section to then drive the EL34/ECF80 power amplifier stage. The board is installed on the inside front of the chassis. This ultra quiet tube stage adds the desired gain for an ideal integrated amplifier and is ultra quiet. You can experiment with the many 12AU7’s available to get different characteristics to your overall sound.
The pre-amplifer version also comes with an Elna selector and extension kit which ensures minimal signal paths.

The Power Amplifier Section

Both the EL34 integrated or power amplifier versions have updated power supply sections complete with a large low inductance Choke and sport Mundorf’s latest power capacitor technology.
The ultra quiet mains T-190 and our newly designed PCB make up the EL34 power supply section. The 3mm thick PCB houses the EL34 & ECF80 driver sections and every detail has been taken into account to ensure clean build and the large chassis and signal ground traces are expertly designed for ultra quiet operation.
We are now also using CMC black teflon valve bases which have an ultra snug fit into the board.

The EL34 tube

Mullard introduced the EL34 in 1953 and it has since has been used in many famous amplifiers ever since including manufacturers such as Marantz, Dynaco, Acrosound, Heath, H. H. Scott and Eico for example. All EL34 amplifer versions comes with the Shugang EL34-B which is a nice example of the tube.


Output Tubes 4 x Shugang EL34
Driver Tube ECF80
Pre-amplifier Tubes 1 x 12AU7
Inputs 3 x Pair RCAs
Outputs  2 x Stereo Pair Binding Posts
Output impedance Suitable for 4 -8- 16 ohm speakers
Width 38.1 cm
Height 14.6 cm
Depth 40.6 cm
Weight 22 Kilos
Chassis 3mm Aluminum with Black Powder Coat

Parts Compliment includes:

  • 2x Double C-Core Output Transformers*
  • Mains Transformer
  • CH-100W Choke
  • 2 x IE-Core Output Transformers**
  • Mundorf M-LYTIC Power Supply cap
  • TAKMAN 1W Resistors
  • Mundorf Supreme Oil Film Caps
  • Mundorf Silver Gold Oil Film Caps
  • Elna Cerafine Caps
  • ALPS 100K Blue Velvet
  • PTFE Silver Plated Hookup Wire
  • Audio Note AN-A Signal Connection
  • Audio Note Silver RCA’s
  • Silver Plated PTFE wire

* C-Core Versions
** IE-Core Versions

Additional information

EL34 Amplifier

Integrated Amplifier with EI Core, Integrated Amplifier with upgraded C-Core output transformers, Power Amplifier with EI Core, Power Amplifier with upgraded C-Core output transformers